Pneumatic cleaner.



PATENTED 'FEB. 19, 1907 P. SGHAUER. PNEUMATIC CLEANER.

APPLIUATION FILED MAY 7,1906.

1217022727": fazlidzfizlm'ii' I gitudinal section throu which form air-tight joints.

PAUL SOHAUER, OF BERLIN, GERMANY.

PNEUMATIC -CLEANER.

Specification of Letters Patent.

Patented Feb. 19, 1907.

Application filed May 7, 19-06. smn No. 316.658.

to the valves for controlling the action of the device, and consists of the details of construction hereinafter described, and particularly pointed out in the claims.

In order to render the present speciiication easily intelligible, reference is had to the accompanying drawings, in which slmilar numerals of reference denote similar parts throughout the several views.

' Figure l'is an elevation showmg the arrangement of the apparatus. Fig. 2 is a lona valve arranged in the suction-pipe, not ar from the suctionnoz zle and drawn on an enlarged scale.

To the to 1 of the ordinary water system of the dwel ing isscrewed or otherwise attached an ejector 2, .through which when the tap is open the water flows and draws the'air along t e pipe 3 and throu h the T- iece 4 from the receptacle 5 and a so fromt e pipe -6, which may be of any suitable length and is provided at its end with the dust-extracting nozzle 7 and intermediate'valve 8, hereinafter more particularly described. To the flexible pipe 6 is connected a metal tube 18, while the nozzle 7 is carried by a similar metal tube 18, these two tubes being rigidly connected by a tubular metallic sleeve 8, which has its ends rigidly connected to the tubes 18 and 18 by coupling devices 12,

The tubes 18 and 18 project within the tube 8, and their ends are connected by a collapsible tubular member 9, which is capable of being collapsed to close the passage thercthrough. The tubular member 8 1s rovided with an a erture 10, which is designed to be closed w len desired by the application of the thumb of the operator.

the operation of the device will beclear; but it maybe briefly stated as follows: The action of the water-tap produces a vacuum in the tank 5 and pipe 6, and as long as the opening 10 is closed by the pressure of the thumb air will be drawn in through the cleanin nozzle 7.. If it be desired to temporarily suspend the passage of air through the nozzle, the opening 10 is uncovered, which permits air at atmospheric'pressure to pass within the tube 8, and this"pressing on the collapsible tube 9, combined with the partial vacuum or suction therein, collapses said tube to completely close the same to the passage of air. During this time of course the entire suction efiect of the tap will be exerted to increase the vacuum in the tank 5. instead of operating the valve 8 by the thumb or finger some other suitable means may be employed, which when the valve is not operated are kept ofi from the orifice 10.

I provide an orifice at 11, leading from the space surroundin within the non-collapsible casing, so that the air confined in this space may pass out therethrough and into the suction-pipe when the thumb or finger is placed over the opening 10 and it is desired to have the collapsible tube open for the operation of the apparatus.

' I'claim as my invention 1. controlling-valve for the suctionthe collapsible tube and pipes of pneumatic cleaners and the like comprising a'ri id tubular member havin an air-- passage to e opened and closed at will, ri 'd suction-tube sections projectin into t e ends of said tubular member, an a collapsible tube within the rigid tube and connecting the ends of said suction-tube sections with means of escape for the air from within said non-collapsible casin when said air-passage is closed, substantial y as described.

In testimony whereof I affix my signature in the presence of two witnesses. From the foregoing description it is thought.

PAUL SCHAUER.

Witnesses:

HENRY lIAsPER, WOLDEMAR HAUPT. 

